XCEngine/new_editor/include/XCEditor/Shell/UIEditorStatusBar.h

#pragma once

#include <XCEngine/UI/DrawData.h>

#include <cstddef>
#include <cstdint>
#include <string>
#include <string_view>
#include <vector>

namespace XCEngine::UI::Editor::Widgets {

inline constexpr std::size_t UIEditorStatusBarInvalidIndex =
    static_cast<std::size_t>(-1);

enum class UIEditorStatusBarSlot : std::uint8_t {
    Leading = 0,
    Trailing
};

enum class UIEditorStatusBarTextTone : std::uint8_t {
    Primary = 0,
    Muted,
    Accent
};

enum class UIEditorStatusBarHitTargetKind : std::uint8_t {
    None = 0,
    Background,
    Segment,
    Separator
};

struct UIEditorStatusBarSegment {
    std::string segmentId = {};
    std::string label = {};
    UIEditorStatusBarSlot slot = UIEditorStatusBarSlot::Leading;
    UIEditorStatusBarTextTone tone = UIEditorStatusBarTextTone::Primary;
    bool interactive = true;
    bool showSeparator = false;
    float desiredWidth = 0.0f;
};

struct UIEditorStatusBarState {
    std::size_t hoveredIndex = UIEditorStatusBarInvalidIndex;
    std::size_t activeIndex = UIEditorStatusBarInvalidIndex;
    bool focused = false;
};

struct UIEditorStatusBarMetrics {
    float barHeight = 22.0f;
    float outerPaddingX = 8.0f;
    float segmentPaddingX = 8.0f;
    float segmentPaddingY = 4.0f;
    float segmentGap = 2.0f;
    float separatorWidth = 1.0f;
    float separatorInsetY = 5.0f;
    float slotGapMin = 18.0f;
    float cornerRounding = 0.0f;
    float estimatedGlyphWidth = 6.5f;
    float borderThickness = 1.0f;
    float focusedBorderThickness = 1.0f;
};

struct UIEditorStatusBarPalette {
    ::XCEngine::UI::UIColor surfaceColor =
        ::XCEngine::UI::UIColor(0.16f, 0.16f, 0.16f, 1.0f);
    ::XCEngine::UI::UIColor borderColor =
        ::XCEngine::UI::UIColor(0.23f, 0.23f, 0.23f, 1.0f);
    ::XCEngine::UI::UIColor focusedBorderColor =
        ::XCEngine::UI::UIColor(0.35f, 0.35f, 0.35f, 1.0f);
    ::XCEngine::UI::UIColor segmentColor =
        ::XCEngine::UI::UIColor(0.18f, 0.18f, 0.18f, 1.0f);
    ::XCEngine::UI::UIColor segmentHoveredColor =
        ::XCEngine::UI::UIColor(0.22f, 0.22f, 0.22f, 1.0f);
    ::XCEngine::UI::UIColor segmentActiveColor =
        ::XCEngine::UI::UIColor(0.25f, 0.25f, 0.25f, 1.0f);
    ::XCEngine::UI::UIColor segmentBorderColor =
        ::XCEngine::UI::UIColor(0.29f, 0.29f, 0.29f, 1.0f);
    ::XCEngine::UI::UIColor separatorColor =
        ::XCEngine::UI::UIColor(0.27f, 0.27f, 0.27f, 1.0f);
    ::XCEngine::UI::UIColor textPrimary =
        ::XCEngine::UI::UIColor(0.84f, 0.84f, 0.84f, 1.0f);
    ::XCEngine::UI::UIColor textMuted =
        ::XCEngine::UI::UIColor(0.62f, 0.62f, 0.62f, 1.0f);
    ::XCEngine::UI::UIColor textAccent =
        ::XCEngine::UI::UIColor(0.84f, 0.84f, 0.84f, 1.0f);
};

struct UIEditorStatusBarLayout {
    ::XCEngine::UI::UIRect bounds = {};
    ::XCEngine::UI::UIRect leadingSlotRect = {};
    ::XCEngine::UI::UIRect trailingSlotRect = {};
    std::vector<::XCEngine::UI::UIRect> segmentRects = {};
    std::vector<::XCEngine::UI::UIRect> separatorRects = {};
};

struct UIEditorStatusBarHitTarget {
    UIEditorStatusBarHitTargetKind kind = UIEditorStatusBarHitTargetKind::None;
    std::size_t index = UIEditorStatusBarInvalidIndex;
};

float ResolveUIEditorStatusBarDesiredSegmentWidth(
    const UIEditorStatusBarSegment& segment,
    const UIEditorStatusBarMetrics& metrics = {});

UIEditorStatusBarLayout BuildUIEditorStatusBarLayout(
    const ::XCEngine::UI::UIRect& bounds,
    const std::vector<UIEditorStatusBarSegment>& segments,
    const UIEditorStatusBarMetrics& metrics = {});

UIEditorStatusBarHitTarget HitTestUIEditorStatusBar(
    const UIEditorStatusBarLayout& layout,
    const ::XCEngine::UI::UIPoint& point);

::XCEngine::UI::UIColor ResolveUIEditorStatusBarTextColor(
    UIEditorStatusBarTextTone tone,
    const UIEditorStatusBarPalette& palette = {});

void AppendUIEditorStatusBarBackground(
    ::XCEngine::UI::UIDrawList& drawList,
    const UIEditorStatusBarLayout& layout,
    const std::vector<UIEditorStatusBarSegment>& segments,
    const UIEditorStatusBarState& state,
    const UIEditorStatusBarPalette& palette = {},
    const UIEditorStatusBarMetrics& metrics = {});

void AppendUIEditorStatusBarForeground(
    ::XCEngine::UI::UIDrawList& drawList,
    const UIEditorStatusBarLayout& layout,
    const std::vector<UIEditorStatusBarSegment>& segments,
    const UIEditorStatusBarState& state,
    const UIEditorStatusBarPalette& palette = {},
    const UIEditorStatusBarMetrics& metrics = {});

void AppendUIEditorStatusBar(
    ::XCEngine::UI::UIDrawList& drawList,
    const ::XCEngine::UI::UIRect& bounds,
    const std::vector<UIEditorStatusBarSegment>& segments,
    const UIEditorStatusBarState& state,
    const UIEditorStatusBarPalette& palette = {},
    const UIEditorStatusBarMetrics& metrics = {});

} // namespace XCEngine::UI::Editor::Widgets